FIX: Fetch stats if it has not been cached.

spec/support/shared_examples_for_stats_cacheable.rb

@@ -1,22 +1,25 @@
 shared_examples_for 'stats cachable' do
   describe 'fetch_cached_stats' do
-    it 'returns the cached stats' do
-      begin
-        stats = { "visits" => 10 }
-        $redis.set(described_class.stats_cache_key, stats.to_json)
-        expect(described_class.fetch_cached_stats).to eq(stats)
-      ensure
-        $redis.del(described_class.stats_cache_key)
-      end
+    after do
+      $redis.flushall
     end
 
-    it 'returns nil if no stats has been cached' do
-      expect(described_class.fetch_cached_stats).to eq(nil)
+    it 'returns the cached stats' do
+      stats = described_class.fetch_stats.to_json
+      $redis.set(described_class.stats_cache_key, stats)
+      expect(described_class.fetch_cached_stats).to eq(JSON.parse(stats))
+    end
+
+    it 'returns fetches the stats if stats has not been cached' do
+      Timecop.freeze do
+        $redis.del(described_class.stats_cache_key)
+        expect(described_class.fetch_cached_stats).to eq(JSON.parse(described_class.fetch_stats.to_json))
+      end
     end
   end
 
   describe 'fetch_stats' do
-    it 'has been implemented' do
+    it 'has not been implemented' do
       expect{ described_class.fetch_stats }.to_not raise_error
     end
   end